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Inventor

Masayoshi Nakayama

Inventor
Ibaraki, JP

Overview

40→
Patents
1980–2020
Patent span
Physics
Primary field (CPC G)

Patents· 40 as inventor

Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.

G03Gprimary
G03GElectrography58%
G11CStatic stores24%
A01NPreservation of bodies of humans or animals or plants or parts thereof2%
C01BNon-metallic elements2%
C01PIndexing scheme relating to structural and physical aspects of solid inorganic compounds2%
C04BLime, magnesia2%
H01LSemiconductor devices2%
H04WWireless communication networks2%
H10BElectronic memory devices2%
H10NElectric solid-state devices not otherwise provided for2%
PatentTitleYear
10,599,081Image forming apparatus and voltage application method202010,241,462Image forming apparatus201910,210,930Nonvolatile semiconductor storage apparatus20199,747,979'Nonvolatile semiconductor storage device including cell transistor performance measuring cells'20179,720,355'Image forming apparatus'20179,696,654'Image forming apparatus comprising image density detector and toner concentration detector'20179,500,978'Image forming apparatus including electric charge removing device and method of forming image'20169,488,931'Image forming apparatus'20169,459,564'Image forming apparatus'20169,423,746'Image forming apparatus and method in which a developer carrying member is rotated for a predetermined time during a startup or removal operation'20169,343,115'Nonvolatile semiconductor memory device'20169,229,399'Image forming apparatus and method having a forcible toner consumption process'20168,718,498'Image forming apparatus and image forming method for advanced control of image density'20148,711,629'Nonvolatile semiconductor memory device'20148,681,565'Semiconductor memory device'20148,346,134'Developing device and image forming apparatus that include a developer transport amount regulation part'20138,301,047'Image forming apparatus and method of controlling development electric field strength therein'20128,270,856'Apparatus including a re-transfer unit to re-transfer a recording medium and method of image forming'20128,045,893'Developing device and image forming apparatus including inclined transport screw'20118,041,269'Development apparatus having two developer bearers and two development chambers'20118,019,239'Device and method for detecting life of organic photoreceptor and image forming apparatus'20118,014,202'Non-volatile semiconductor memory device'20118,014,706'Developing device, process cartridge, and image forming apparatus'20117,925,174'Image forming apparatus'20117,924,627'Semiconductor memory device'20117,904,001'Developing unit, process cartridge, and image forming apparatus having a plurality of conveyor members, a supply part, and a discharge part'20117,826,775'Developing device and image forming apparatus'20107,792,466'Image forming apparatus and developing device'20107,792,465'Developing device, process cartridge, and image forming apparatus'20107,580,657'Developing device in image-forming device'20097,561,461'Non-volatile semiconductor memory device'20097,502,579'Developing device using developer of particular properties suitable therefore'20097,420,844'Non-volatile semiconductor memory device'20087,339,823'Nonvolatile semiconductor storage apparatus and method of driving the same'20087,161,832'Non-volatile semiconductor memory device'20077,106,983'Color image forming apparatus'20067,075,912'Wireless communication system using access points that can be freely set up by users'20066,954,604'Electronic photographing apparatus'20054,374,793'Method of producing dense sintered silicon carbide body from polycarbosilane'19834,212,664'Nicotinamide-ammonium hydroxide plant growth regulator compositions'1980

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1983–2019Based in Kyoto, JP· patent location history
2005–2020Based in Ibaraki, JP· patent location history
2008–2011Based in Shiga, JP· patent location history
2010–2013Based in Tokyo, JP· patent location history
2011–2020Patents assigned to RICOH CO LTD (19)· patent assignee history
2012–2020Patents assigned to NAKAYAMA MASAYOSHI (14)· patent assignee history
2014–2017Based in Kanagawa, JP· patent location history
2016–2020Patents assigned to HIGA TAKUMA (6)· patent assignee history
2016–2020Patents assigned to KAMIHARA KAZUAKI (6)· patent assignee history
2016–2020Patents assigned to SUKESAKO MASAKI (6)· patent assignee history

Inventor activity

Assignee and location history derived from the patent record.

Assignees
AssigneePatentsSpan
RICOH CO LTD192011–2020
NAKAYAMA MASAYOSHIself142012–2020
HIGA TAKUMA62016–2020
KAMIHARA KAZUAKI62016–2020
SUKESAKO MASAKI62016–2020
Locations
LocationPatentsSpan
Ibaraki, JP72005–2020
Tokyo, JP72010–2013
Kyoto, JP61983–2019
Kanagawa, JP62014–2017
Shiga, JP52008–2011